Callouses or corns will commonly form on top of the claw toe. If a corn puts pressure on nerves in the foot, it can also cause pain. Pes planus (flat feet) is when the arc of the foot straightens out.

Halstead et al (2015) reported changes most frequently in the cuneiform-second metatarsal joint (73%), followed by the naviculo-medial cuneiform joint (51%), the cuneiform-first metatarsal joint (46%) ...